I know this is an older post, but this might help a new grower. A much easier way to keep your RDWC water temps down. Buy a used water cooler off kijiji or facebook market place ( $15- $35 ), one that you would normally put a 5 gal jug in the top. Now tear it apart so that you are left with the...
Looking at this thread, it seams to me that you are doing much more work then you need to. To chill my res down to any temp you want, I set mine for 67 deg, here is what I do. I look at online market sites for a used water cooler, one you would put a 5 gal jug on top. I have bought 2 for about...
If you are open to running a RDWC, which is basically the same except you have a reservoir outside your tent and pump (I use a 12 volt 240L/hr pump) the nutrient into the grow bucket in the tent with a return line to the res. They will always stay level. Now to cool your res. I bought a used...
Pick up a used 5 gal water cooler and tear it apart. Use the coil in your rez. Some coils have a coating on them, if not I just use a plastic bag to stop corrosion
I converted an old 5 gal jug water cooler to cool my Rez. Just tore it apart and stuck the coil in the Rez and plunged it into a device to monitor the temp.